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Cacace T, García-García A, Zito G, et al. Nematic liquid crystal reorientation around multi-walled carbon nanotubes mapped via Raman microscopy. Opt Express. 2016;24(14):15954-64doi: 10.1364/OE.24.015954.
Cacace, T., García-García, A., Zito, G., Tkachenko, V., Rusciano, G., Geday, M. A., Otón, J. M., Marino, A., & Sasso, A. (2016). Nematic liquid crystal reorientation around multi-walled carbon nanotubes mapped via Raman microscopy. Optics express, 24(14), 15954-64. https://doi.org/10.1364/OE.24.015954
Cacace, T, et al. "Nematic liquid crystal reorientation around multi-walled carbon nanotubes mapped via Raman microscopy." Optics express vol. 24,14 (2016): 15954-64. doi: https://doi.org/10.1364/OE.24.015954
Cacace T, García-García A, Zito G, Tkachenko V, Rusciano G, Geday MA, Otón JM, Marino A, Sasso A. Nematic liquid crystal reorientation around multi-walled carbon nanotubes mapped via Raman microscopy. Opt Express. 2016 Jul 11;24(14):15954-64. doi: 10.1364/OE.24.015954. PMID: 27410863.
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Opt Express. 2016 Jul 11;24(14):15954-64. doi: 10.1364/OE.24.015954.

Nematic liquid crystal reorientation around multi-walled carbon nanotubes mapped via Raman microscopy.

Optics express

T Cacace, A García-García, G Zito, V Tkachenko, G Rusciano, M A Geday, J M Otón, A Marino, A Sasso

PMID: 27410863 DOI: 10.1364/OE.24.015954

Abstract

We have studied the formation of topological defects in liquid crystal (LC) matrices induced by multiwalled carbon nanotubes (MWCNTs) and external electric fields. The defects are ascribable to a distortion of the LC molecular director in proximity of the MWCNT surface. The system is analyzed macroscopically using spectroscopic variable angle ellipsometry. Concurrently, confocal micro-Raman spectroscopy is used to study the system state at the microscale. This allows to acquire a three-dimensional, spatially-resolved map of the topological defect, determining scale length variations and orientation topography of the LC molecules around the MWCNT.

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